40 C.F.R. § 421.194

Current through October 31, 2024
Section 421.194 - Standards of performance for new sources

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Displacement Supernatant.

NSPS for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of indium metal produced
Cadmium2.1050.929
Lead2.6001.238
Zinc9.0373.776
Indium2.7241.114
Total suspended solids253.800120.700
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Spent Electrolyte.

NSPS for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of cathode indium produced
Cadmium12.1705.370
Lead15.0407.160
Zinc52.27021.840
Indium15.7506.444
Total suspended solids1,468.000698.100
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

40 C.F.R. §421.194